Actively Recruiting

Phase Not Applicable
Age: 2Years - 80Years
All Genders
ID05163899

Phase II Pilot Randomized-Controlled Trial of Surgical Release of the Filum Terminale Versus Medical Management in Treating Occult Tethered Cord Syndrome

Led by Weill Medical College of Cornell University · Updated on 2026-05-14

20

Participants Needed

1

Research Sites

N/A

Total Duration

On this page

AI-Summary

What this Trial Is About

Researchers are evaluating whether surgical release of the filum terminale, a fibrous tissue at the end of the spinal cord, provides better symptom relief than medical management in patients with Occult Tethered Cord Syndrome (OTCS). This phase II pilot randomized-controlled trial aims to assess the preliminary effectiveness and safety of surgery compared to medical treatment for this condition. Participants will be randomly assigned to either undergo surgical untethering of the filum terminale or receive only medical management. Symptom improvement and any adverse events will be monitored and recorded for one year after treatment begins. After at least one year, patients initially receiving medical management may switch to surgery if the principal investigator considers it beneficial. Throughout the study, participants will have their symptoms evaluated using the OCCULT Scale at the start and after one year. Additional assessments include urologic and fecal incontinence scores, medication changes, and intra-operative findings during surgery. Safety and symptom changes will be carefully tracked for one year to understand the treatment effects and risks involved.

CONDITIONS

Brief Title

Investigation of Surgical Sectioning of the Filum Terminale in Treating Occult Tethered Cord Syndrome Patients

Who Can Participate

Age: 2Years - 80Years
All Genders

Eligibility Criteria

Eligible

You may qualify if you...

  • Male or female aged 2 to less than 80 years
  • Symptoms refractory to medical management for at least 1 year
  • Diagnosis of OTCS with a total score of at least 30 on the OCCULT Grading Scale
Not Eligible

You will not qualify if you...

  • Younger than 2 or older than 80 years
  • Radiographically identified tethered cord (low-lying conus at or below L2-3, thickened filum over 2 mm, fat in filum or lipoma, or clear tethering)
  • History of Meningocele manqué or Myelomeningocele
  • Cutaneous markings of dermal sinus tract
  • Prior surgery on the lumbar spine or for spinal dysraphism
  • History of central nervous system infection or autoimmune condition

AI-Screening

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Your Study Journey

Screening

Duration - 2 to 4 weeks

Participants are screened for eligibility to participate in the trial.

Surgery

Duration - 1 day

Participants randomized to surgery undergo filum terminale release to treat OTCS.

1 surgical procedure and hospital stay

Treatment

Duration - 1 year

Participants receive medical management or recover from surgery while symptoms and adverse events are monitored.

Periodic visits during 1 year of treatment

Follow-up

Duration - At least 1 year after crossover

After 1 year, participants in the medical management arm may cross over to surgery if deemed appropriate and continue to be monitored.

Follow-up visits after crossover surgery

Trial Site Locations

Total: 1 location

1

Weill Cornell Medicine

New York, New York, United States, 10065

Actively Recruiting

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Research Team

C

Cynthia Nguyen

J

Jeffrey Greenfield, MD, PhD

How is the study designed?

Study Type

INTERVENTIONAL

Masking

SINGLE

Allocation

RANDOMIZED

Model

CROSSOVER

Primary Purpose

TREATMENT

Number of Arms

2

Frequently Asked Questions

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Published Research Related To This Trial